International Klein Blue

#0525AE

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein registered this color as a trademark in 1957. The visual impact of IKB comes from its heavy reliance on ultramarine pigment, as well as Klein's artistic use of a matte, synthetic resin binder, which suspends the color pigment and allows the pigment to maintain its original qualities. The color's intensity and purity were intended to evoke a sense of boundlessness and immersion, reflecting Klein's artistic exploration of space and the infinite. Because of its unique history it is a great choice for art projects or web designs that want to evoke a feeling of prestige.

The color #0525AE, also known as International Klein Blue, presents significant accessibility challenges due to its low luminance. When used as text, it requires a very light background to ensure sufficient contrast for readability, adhering to WCAG guidelines for color contrast ratios. Specifically, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Using this color for interactive elements like buttons or links necessitates careful consideration of focus states, where a clear visual indicator is crucial for users who navigate with keyboards or assistive technologies. Ensure that the focus indicator provides enough contrast against both the color and its background to meet accessibility standards. Avoid pairing this dark blue with other dark shades, as this will further reduce contrast and make content inaccessible to users with visual impairments.

Shades

Digital Color Formats

RGB
5 37 174
RGB5 37 174
Red
Green
Blue
HSL
228.64 94.41% 35.1%
228.6494.4135.1HSL
Hue
Saturation
Lightness
HWB
228.64 1.96% 31.76%
228.641.9631.76HWB
Hue
Whiteness
Blackness
hex#0525AE
rgb5 37 174
hsl228.64 94.41% 35.1%
cmyk97.13% 78.74% 0% 31.76%
hwb228.64 1.96% 31.76%
xyz8.36 4.41 40.46
CMYK
97.13% 78.74% 0% 31.76%
97.1378.74031.76CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.36 4.41 40.46
8.364.4140.46XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

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